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Blind detection method of multi-valued communication signals in complex domain based on reserve pool calculation

A communication signal and reserve pool technology, applied in digital transmission systems, baseband system components, shaping networks in transmitters/receivers, etc., can solve problems such as difficulty in ensuring network stability

Active Publication Date: 2017-01-25
温州晶彩光电有限公司
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Problems solved by technology

Moreover, RNN is a nonlinear dynamic system, and it is difficult to guarantee the stability of the network during training.

Method used

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  • Blind detection method of multi-valued communication signals in complex domain based on reserve pool calculation
  • Blind detection method of multi-valued communication signals in complex domain based on reserve pool calculation
  • Blind detection method of multi-valued communication signals in complex domain based on reserve pool calculation

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Embodiment Construction

[0048] The present invention is specifically described below by the embodiment, only for further illustrating the present invention, can not be interpreted as the limitation of protection scope of the present invention, the technical engineer of this field can make some non-essential improvements and improvements to the present invention according to the content of the above-mentioned invention Adjustment.

[0049] There is no need to send a known training sequence, but using various prior knowledge of the sent signal, through the blind equalizer g k Equalize the output x(k) of the channel, and continuously adjust the coefficients of the equalizer so that the equalizer output sequence As close as possible to the input sequence s(k). Blind detection does not need to design an equalizer or perform channel estimation, but directly detects the original transmission sequence at the receiving end, so that Among them, α is the amplitude factor, δ is the time delay factor, and θ is ...

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Abstract

The invention discloses a complex number field multiple-valued communication signal blind detection method based on reservoir computing (RC). According to the technical scheme, a reservoir network suitable for signal direct blind detection is established and does not abide by the RC weight array random generation mechanism, a reservoir matrix is designed through QR decomposition from the angle of receiving terminal signal subspace, a support vector regression method is used for updating training of weight value reading of the reservoir network, and a design method of an RC network nonlinearity reading function is given. The method can be suitable for the situation of blind detection of complex number field multiple-valued signals with dense constellation maps and short data frames.

Description

technical field [0001] The invention belongs to the technical field of signal processing of digital wireless communication, and is suitable for wireless communication systems, especially in the case where digital modulation signals belong to multi-valued complex numbers, and the receiving end has relatively serious problems caused by channel fading between the wireless communication transmitter and the receiver. In the case of inter-symbol interference, it is used for direct fast blind detection of signals without known training sequences at the receiving end. Background technique [0002] Blind signal processing (BlindSignalProcessing, BSP) technology has been applied in communication, radar, exploration, image processing and other fields. In particular, in wireless communication systems, inter-symbol interference (Inter-Symbol Interference, ISI) occurs because signals are affected by complex propagation mechanisms and other factors during transmission. In order to elimina...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L25/03H04L1/00
Inventor 谈燕花张耀举阮秀凯李昌李晗蔡启博
Owner 温州晶彩光电有限公司
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